Adsorption of Pure Nonionic Alkylethoxylated Surfactants down to Low Concentrations at a Silica/Water Interface as Determined Using a HPLC Technique

摘要: Abstract The adsorption of pure nonionic alkylethoxylated surfactants the C12Enseries at silica/water interface has been determined using a very precise HPLC technique. number ethoxylated groups was varied from 2 to 9. isotherms were constructed with special attention low surface coverage domain. It is shown that concentration, amounts are higher as increases but reverse trend found surfactant concentration and above critical micelle concentration. this behavior consequence interplay primary secondary mechanisms depending upon length chain. maximum quantities not linear function groups. This other observations confirm viewpoint aggregates adsorbed hydrophilic carries many similarities properties class in bulk aqueous solutions.